liveuser_admin getUsers

Hi, I have an list of email addresses. For each address I would like to check if a corresponding user exists in Liveuser. Here's my code: $lu_admin = LiveUser_Admin::factory($LUOptions); $lu_admin->setAdminPermContainer(); $lu_admin->setAdminAuthContainer('database'); foreach ($emails as $email) { $filters = array(); $filters['auth_user_id'] = $email; $user = $lu_admin->getUsers('perm', $filters, true); if (!$user) { // do some stuff } } //note that "auth_user_id" is always unique email address. This seems to work until we come accross an email that has a corresponding liveuser entry with an auth_container_name set the radius, which is my other auth container (see config below). I get an error. ["code"]=> int(-1) ["params"]=> array(1) {

    ["msg"]=>
    string(40) "Could not create auth container instance"

} ["package"]=> string(14) "LiveUser_Admin" ["level"]=> string(9) "exception" ["time"]=> float(1129290246.5159) ["context"]=> array(4) {

    ["file"]=>
    string(44) "/usr/local/share/php/pear/LiveUser/Admin.php"
    ["line"]=>
    int(267)
    ["function"]=>
    string(21) "setAdminAuthContainer"
    ["class"]=>
    string(14) "LiveUser_Admin"

} ["message"]=> string(58) "An error occurred Could not create auth container instance" My config: $LUOptions = array( 'login' => array(

		'force'    => true

), 'logout' => array( 'destroy' => true, ), // authentication container are used to check username / password combos 'authContainers' => array( // first container, check if user can be authenticated against TERENA Radius server 'radius' => array( 'type' => "PEARAuth", 'pearAuth' => $terena_auth_radius ), // second container, check if user can be authenticated against users table (standard part of PEAR::Liveuser) 'database' => array(

			'type'            => 'DB',
			'loginTimeout'    => 0,
			'expireTime'      => 3600,
			'idleTime'        => 1800,

'updateLastLogin' => false, 'allowDuplicateHandles' => false, 'allowEmptyPasswords' => false, 'passwordEncryptionMode' => 'PLAIN', 'storage' => array( 'dsn' => LIVEUSER_DSN, 'prefix' => 'lu_', 'alias' => array( 'lastlogin' => 'lastlogin', 'is_active' => 'is_active', ), 'tables' => array( 'users' => array( 'fields' => array(

							'lastlogin'     => false,
							'is_active'     => false,

), ), ), 'fields' => array(

					'lastlogin'     => 'timestamp',
					'is_active'     => 'boolean',

), ), ), ), 'permContainer' => array( 'type' => 'Medium', 'storage' => array( 'DB' => array( 'dsn' => LIVEUSER_DSN, 'prefix' => 'lu_', ) ), ), );